Filter
Top Products
A S CO Series 300 Automatic Tran sfer Switch es (ATSs) are
Listed under U nderwriters Laboratories UL 1008 Standard
for Safety for Autom atic Transfer Switches . Al l contr ol
features are UL Component R ecog nized, which assures that
A S CO autom atic transfer sw itc he s meet OSHA Safety
Requirements and will be acceptab l e to electric al inspec tor s.
ASCO Series 300 Automatic Transfer Switches are suitable
for emergency and standby system applications. They meet
emergency system rating requirements as defined in
National Electrical Code (NEC) Article 700 and UL 1008.
Also, they are suitable for the require ments of NEC Article
517 – Health Care Facilities, NEC Article 701 – Legally
Required Standby Systems, NEC Article 702 – Optio nal
Standby Systems, NFPA 99 Health Care Facilities, and
NFPA 110 Emergency and Standby Power Systems.
Rating Label
Eac h autom atic transfer sw itc h con tains a r ating lab el to
define the loads and fault circuit withstand / closing ratings.
Refer to the label on the transfer switch for specific values.
Do not exceed the values on the rating label.
Exceeding the rating can cause personal injury
or serious equipment damage.
terminal block TB
for engine start
and switch
position contacts
Transfer
Switch
Controller
power
connections
power
connections
membrane
controls
800 and 1000 amp. size in typical enclosure with location of customer connections
neutral
connections
neutral
connections